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RainGain program - Work Package 2 - by Patrick Willems - KU Leuven
 

RainGain program - Work Package 2 - by Patrick Willems - KU Leuven

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Description of the Work Package 2

Description of the Work Package 2

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    RainGain program - Work Package 2 - by Patrick Willems - KU Leuven RainGain program - Work Package 2 - by Patrick Willems - KU Leuven Presentation Transcript

      • WP2 : Fine-scale rainfall data acquisition and prediction :
      • Objective: develop and implement a system for estimation and forecasting of fine-scale (100m, minutes) rainfall
      • Rainfall estimation : combining data from radars (X & C-band) and rain gauges
      • Rainfall forecasting : combining with numerical weather prediction
      • implement and test for pilot sites (Leuven, Paris, Rotterdam, London)
      • applicable for urban areas of North-West Europe: guidelines, demonstrations, training, …
      • WP2 : Fine-scale rainfall data acquisition and prediction :
      • Applications (see WP3, WP4):
      • Rainfall estimation : enable city water managers to develop reliable urban water strategies, including plans for urban flood prevention and pollution management
      • Rainfall forecasting : allow local city managers to forecast, warn about and control urban pluvial impacts at street level in real time
    • WP2 : Fine-scale rainfall data acquisition and prediction : Actions:
      • WP2 : Fine-scale rainfall data acquisition and prediction :
      • Actions:
      • WP2 A5 & A6: Rainfall estimation
      • A5: Leuven workshop on radar technology, calibration and rainfall estimation (M3)
        • Outcome: recommended methods for fine-scale rainfall estimation
      • A6: rainfall estimation in pilot sites
        • Outcomes: fine-scale rainfall estimates for recent storms in pilot sites + comparison with traditional rainfall estimates (without radar)
      • WP2 : Fine-scale rainfall data acquisition and prediction :
      • Actions:
      • WP2 A5 & A6: Rainfall estimation
      • Subtopics addressed:
      • Radar calibration and adjustment based on rain gauge data
      • Different calibration/adjustment methods
      • Comparison & integration of fine-scale (X-band, city scale; super- resolution C-band) with rain gauge and coarser (NWE-scale) C-band radar data
      • Rainfall estimation error/uncertainty analysis
      • Interfacing with the applications in WP3 & WP4
      • WP2 : Fine-scale rainfall data acquisition and prediction :
      • Actions:
      • WP2 A7 & A8: Rainfall forecasting
      • A7: London workshop on rainfall forecasting (M6)
        • Outcome: recommended methods for fine-scale rainfall forecasting
      • A8: implementation for pilot sites
        • Outcomes: operational system for fine-scale rainfall forecasting in pilot sites + results for min. 10 extreme storms
      • WP2 : Fine-scale rainfall data acquisition and prediction :
      • Actions:
      • WP2 A7 & A8: Rainfall forecasting (short-term forecasting = nowcasting)
      • Subtopics addressed:
      • Combination of (fine and coarse scale) radar data with Numerical Weather Prediction (provided by national meteo services)
      • Use of lightning detection data
      • Advective-statistical forecast model
      • Spatial and temporal downscaling
      • Error/uncertainty estimation in function of forecast lead time / probabilistic forecasts
      • Interfacing with the applications in WP3 & WP4
      • WP2 : Fine-scale rainfall data acquisition and prediction :
      • Actions:
      • WP2 A9: Guidelines
        • Outcome: reference and user’s manuals on developed technologies for rainfall estimation and forecasting
        • Training and dissemination during National Observer Meetings
      • WP2: Fine-scale rainfall data acquisition and prediction :
      • Timing:
        • WP2 A5: rainfall estimation workshop Leuven: autumn 2012
        • WP2 A6: autumn 2012 – spring 2014: all pilot sites
        • WP2 A7: rainfall forecasting workshop London: spring 2014
        • WP2 A8: spring 2014 – spring 2015: all pilot sites
        • WP2 A9: once a year: National Observer Meetings
      • WP2: Fine-scale rainfall data acquisition and prediction :
      • Workshop participants:
        • workshop Leuven: about 20 radar experts
        • workshop London: about 20 radar + NWP experts
        • local workshops pilot sites: about 20 end users: city flood managers, water managers, consultants and industrial partners
    • Leuven case
      • Aquafin &
      • K.U.Leuven
      • X-band radar installed
      • since 2008
      • City LAWR (DHI)
      • Site selection based on clutter tests
      • Experience with calibration
    • Other fine-scale radar projects in Europe
      • Denmark :
      • X-band LAWR radar Aalborg
      • Comparison of different calibration procedures (incl. dynamic calibration)
      • Impact on urban drainage
    • Other fine-scale radar projects in Europe
      • France – Lyon :
      • C-band radar located in the close vicinity
      • Rain gauges vs. radar
      • Study of intense rain cells
      • Impact on urban drainage
    • Other fine-scale radar projects in Europe
      • France – Southern Alps : ( RHyTMME project)
      • Local X band radar network (4 radars, 2 operational)
      • Installed in mountainous area prone to orographically-induced flooding
      • Gap filling function in ARAMIS (C and S band network)
    • Other fine-scale radar projects outside Europe
      • USA :
      • CASA ( Collaborative Adaptive Sensing of the Atmosphere )
        • Local X band network (moving from Oklahoma “Tornado Alley” to Fort Dallas in 2012)
    • Other fine-scale radar projects in Europe
      • USA :
      • Comparison polarimetric X-band vs. S-band
      • Impact on catchment runoff
    • Other fine-scale radar projects outside Europe
      • Japan :
      • X -NET
      • Nationwide X-band Polarimetric Radar Network (26 radars cover about 80% of the total population)
    •  
    • Leuven case BELGIUM
      • Contributors from Belgium:
      • Patrick Willems, K.U.Leuven
      • Johan Van Assel, Aquafin
      • Maarten Reyniers, Laurent Delobbe,
      • Royal Meteorological Institute of Belgium
    • Leuven case City of Leuven: urban drainage system of the villages Herent, Wisele & Wijgmaal
    • Leuven case City of Leuven: urban drainage system of the villages Herent, Wisele & Wijgmaal
      • Area: 9.13 km 2
      • # people: 16,100
      • 9 tipping bucket rain gauges
      • In-sewer measurements:
        • Water level + velocity in 2 pipes
        • Water level at 3 overflows
        • + water level in river
    • Leuven case Tipping bucket rain gauges: calibration
    • Leuven case Tipping bucket rain gauges: correction wind influence: TBR 2 TBR 1
    • Leuven case X-band radar installed since 2008: City LAWR (DHI)
    • Leuven case Provinciehuis RWZI Bierbeek Res. Riverside Ecowerf Micro Radar Clutter tests
    • Leuven case Beam cut-off
    • Leuven case X-band radar image
    • Leuven case X-band radar calibration
    • Leuven case X-band radar calibration G (mm/h)
    • Leuven case
      • SP C-band radars
        • Wideumont (RMI)
        • Zaventem (Belgocontrol)
      • DP C-band radar:
        • from beginning 2012 in Jabbeke
      (Delobbe et al., 2006)